Examples of org.apache.lucene.document.StringField

org.apache.lucene.document.StringField
A field that is indexed but not tokenized: the entire String value is indexed as a single token. For example this might be used for a 'country' field or an 'id' field, or any field that you intend to use for sorting or access through the field cache.

  private void doTestNumericsVsStoredFields(LongProducer longs) throws Exception {
    Directory dir = newDirectory();
    IndexWriterConfig conf = newIndexWriterConfig(TEST_VERSION_CURRENT, new MockAnalyzer(random()));
    RandomIndexWriter writer = new RandomIndexWriter(random(), dir, conf);
    Document doc = new Document();
    Field idField = new StringField("id", "", Field.Store.NO);
    Field storedField = newStringField("stored", "", Field.Store.YES);
    Field dvField = new NumericDocValuesField("dv", 0);
    doc.add(idField);
    doc.add(storedField);
    doc.add(dvField);
    
    // index some docs
    int numDocs = atLeast(300);
    // numDocs should be always > 256 so that in case of a codec that optimizes
    // for numbers of values <= 256, all storage layouts are tested
    assert numDocs > 256;
    for (int i = 0; i < numDocs; i++) {
      idField.setStringValue(Integer.toString(i));
      long value = longs.next();
      storedField.setStringValue(Long.toString(value));
      dvField.setLongValue(value);
      writer.addDocument(doc);
      if (random().nextInt(31) == 0) {

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  private void doTestMissingVsFieldCache(LongProducer longs) throws Exception {
    assumeTrue("Codec does not support getDocsWithField", defaultCodecSupportsDocsWithField());
    Directory dir = newDirectory();
    IndexWriterConfig conf = newIndexWriterConfig(TEST_VERSION_CURRENT, new MockAnalyzer(random()));
    RandomIndexWriter writer = new RandomIndexWriter(random(), dir, conf);
    Field idField = new StringField("id", "", Field.Store.NO);
    Field indexedField = newStringField("indexed", "", Field.Store.NO);
    Field dvField = new NumericDocValuesField("dv", 0);


    
    // index some docs
    int numDocs = atLeast(300);
    // numDocs should be always > 256 so that in case of a codec that optimizes
    // for numbers of values <= 256, all storage layouts are tested
    assert numDocs > 256;
    for (int i = 0; i < numDocs; i++) {
      idField.setStringValue(Integer.toString(i));
      long value = longs.next();
      indexedField.setStringValue(Long.toString(value));
      dvField.setLongValue(value);
      Document doc = new Document();
      doc.add(idField);

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  private void doTestBinaryVsStoredFields(int minLength, int maxLength) throws Exception {
    Directory dir = newDirectory();
    IndexWriterConfig conf = newIndexWriterConfig(TEST_VERSION_CURRENT, new MockAnalyzer(random()));
    RandomIndexWriter writer = new RandomIndexWriter(random(), dir, conf);
    Document doc = new Document();
    Field idField = new StringField("id", "", Field.Store.NO);
    Field storedField = new StoredField("stored", new byte[0]);
    Field dvField = new BinaryDocValuesField("dv", new BytesRef());
    doc.add(idField);
    doc.add(storedField);
    doc.add(dvField);
    
    // index some docs
    int numDocs = atLeast(300);
    for (int i = 0; i < numDocs; i++) {
      idField.setStringValue(Integer.toString(i));
      final int length;
      if (minLength == maxLength) {
        length = minLength; // fixed length
      } else {
        length = _TestUtil.nextInt(random(), minLength, maxLength);

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  private void doTestSortedVsStoredFields(int minLength, int maxLength) throws Exception {
    Directory dir = newDirectory();
    IndexWriterConfig conf = newIndexWriterConfig(TEST_VERSION_CURRENT, new MockAnalyzer(random()));
    RandomIndexWriter writer = new RandomIndexWriter(random(), dir, conf);
    Document doc = new Document();
    Field idField = new StringField("id", "", Field.Store.NO);
    Field storedField = new StoredField("stored", new byte[0]);
    Field dvField = new SortedDocValuesField("dv", new BytesRef());
    doc.add(idField);
    doc.add(storedField);
    doc.add(dvField);
    
    // index some docs
    int numDocs = atLeast(300);
    for (int i = 0; i < numDocs; i++) {
      idField.setStringValue(Integer.toString(i));
      final int length;
      if (minLength == maxLength) {
        length = minLength; // fixed length
      } else {
        length = _TestUtil.nextInt(random(), minLength, maxLength);

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  private void doTestSortedVsFieldCache(int minLength, int maxLength) throws Exception {
    Directory dir = newDirectory();
    IndexWriterConfig conf = newIndexWriterConfig(TEST_VERSION_CURRENT, new MockAnalyzer(random()));
    RandomIndexWriter writer = new RandomIndexWriter(random(), dir, conf);
    Document doc = new Document();
    Field idField = new StringField("id", "", Field.Store.NO);
    Field indexedField = new StringField("indexed", "", Field.Store.NO);
    Field dvField = new SortedDocValuesField("dv", new BytesRef());
    doc.add(idField);
    doc.add(indexedField);
    doc.add(dvField);
    
    // index some docs
    int numDocs = atLeast(300);
    for (int i = 0; i < numDocs; i++) {
      idField.setStringValue(Integer.toString(i));
      final int length;
      if (minLength == maxLength) {
        length = minLength; // fixed length
      } else {
        length = _TestUtil.nextInt(random(), minLength, maxLength);
      }
      String value = _TestUtil.randomSimpleString(random(), length);
      indexedField.setStringValue(value);
      dvField.setBytesValue(new BytesRef(value));
      writer.addDocument(doc);
      if (random().nextInt(31) == 0) {
        writer.commit();
      }

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    IndexWriterConfig iwconfig = newIndexWriterConfig(TEST_VERSION_CURRENT, analyzer);
    iwconfig.setMergePolicy(newLogMergePolicy());
    RandomIndexWriter iwriter = new RandomIndexWriter(random(), directory, iwconfig);
    
    Document doc = new Document();
    doc.add(new StringField("id", "0", Field.Store.NO));
    iwriter.addDocument(doc);    
    doc = new Document();
    doc.add(new StringField("id", "1", Field.Store.NO));
    doc.add(new SortedSetDocValuesField("field", new BytesRef("hello")));
    iwriter.addDocument(doc);
    iwriter.commit();
    iwriter.deleteDocuments(new Term("id", "1"));
    iwriter.forceMerge(1);

View Full Code Here

    
    // index some docs
    int numDocs = atLeast(300);
    for (int i = 0; i < numDocs; i++) {
      Document doc = new Document();
      Field idField = new StringField("id", Integer.toString(i), Field.Store.NO);
      doc.add(idField);
      final int length;
      if (minLength == maxLength) {
        length = minLength; // fixed length
      } else {

View Full Code Here

    
    // index some docs
    int numDocs = atLeast(300);
    for (int i = 0; i < numDocs; i++) {
      Document doc = new Document();
      Field idField = new StringField("id", Integer.toString(i), Field.Store.NO);
      doc.add(idField);
      final int length;
      if (minLength == maxLength) {
        length = minLength; // fixed length
      } else {

View Full Code Here

    Directory directory = newDirectory();
    IndexWriterConfig conf = newIndexWriterConfig(TEST_VERSION_CURRENT, null);
    conf.setMergePolicy(newLogMergePolicy());
    RandomIndexWriter iw = new RandomIndexWriter(random(), directory, conf);
    Document doc = new Document();
    doc.add(new StringField("id", "0", Field.Store.YES));
    doc.add(new NumericDocValuesField("dv1", 0));
    iw.addDocument(doc);
    doc = new Document();
    doc.add(new StringField("id", "1", Field.Store.YES));
    iw.addDocument(doc);
    iw.forceMerge(1);
    iw.close();
    
    IndexReader ir = DirectoryReader.open(directory);

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    Directory directory = newDirectory();
    IndexWriterConfig conf = newIndexWriterConfig(TEST_VERSION_CURRENT, null);
    conf.setMergePolicy(newLogMergePolicy());
    RandomIndexWriter iw = new RandomIndexWriter(random(), directory, conf);
    Document doc = new Document();
    doc.add(new StringField("id", "0", Field.Store.YES));
    doc.add(new NumericDocValuesField("dv1", 0));
    iw.addDocument(doc);
    iw.commit();
    doc = new Document();
    doc.add(new StringField("id", "1", Field.Store.YES));
    iw.addDocument(doc);
    iw.forceMerge(1);
    iw.close();
    
    IndexReader ir = DirectoryReader.open(directory);

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